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OpenStudy (mstv1112):

@jim_thompson5910 I have 2 questions could you help me?

OpenStudy (mstv1112):

jimthompson5910 (jim_thompson5910):

any ideas?

jimthompson5910 (jim_thompson5910):

or were you not able to get started?

OpenStudy (mstv1112):

I wsn't able to get started I was fine until I got to these two

jimthompson5910 (jim_thompson5910):

are you familiar with the terms mean, median, mode?

OpenStudy (mstv1112):

Yes

jimthompson5910 (jim_thompson5910):

how do you find the mean?

OpenStudy (mstv1112):

Add all numbers up then divide by amount of numbers given

jimthompson5910 (jim_thompson5910):

yes, is that possible here?

OpenStudy (mstv1112):

for the first problem no

jimthompson5910 (jim_thompson5910):

because you can't add colors (addition is only defined for numbers)

OpenStudy (mstv1112):

is the answer mode red

OpenStudy (mstv1112):

most often = mode

jimthompson5910 (jim_thompson5910):

yes because you also can't find the median either

OpenStudy (mstv1112):

Okay on the second ne what do they mean by outlier

jimthompson5910 (jim_thompson5910):

an outlier is some data value that is all by itself compared to the rest of the data the rest of the data points usually group around each other

OpenStudy (mstv1112):

umm okayy I don't really get it

OpenStudy (mstv1112):

How do I find it?

jimthompson5910 (jim_thompson5910):

here's an example http://mathworld.wolfram.com/images/eps-gif/OutlierScatterplot_1000.gif in that image, all the points follow a certain pattern (more or less) along that line. There is one outlier that is not part of the group

jimthompson5910 (jim_thompson5910):

anyways, what is the smallest value?

jimthompson5910 (jim_thompson5910):

of that list you're given

OpenStudy (mstv1112):

31

OpenStudy (mstv1112):

do I have to find the median and then divide agin by the number of data values

jimthompson5910 (jim_thompson5910):

no there is a smaller value

OpenStudy (mstv1112):

oh 20

jimthompson5910 (jim_thompson5910):

what is the mean of the whole list of numbers?

OpenStudy (mstv1112):

33

OpenStudy (mstv1112):

Oh okay I think I got it B. 20 lowers it

jimthompson5910 (jim_thompson5910):

yes it lowers it by 1.9 outliers on the left lower the mean, outliers on the right increase the mean

OpenStudy (mstv1112):

Yess I had missed the 20 I had originally thought 31 was the smallest value that's what messed me up

OpenStudy (mstv1112):

Thank you agian

jimthompson5910 (jim_thompson5910):

np

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